Improvement in sash-supporters



Ormea.

SILAS D. BALDWIN, OF CHICAGO, ILLINOIS.

HWFROVEWI ENT IN SASll-l-SUPPORTEHS.

Specification forming part of Letters Patent No. 56,515, dated July 24, 1866.

To all whom it may concern:

Be it known that I, SrLAs l). BALDWIN, of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful improvements in Sash Fastcuers; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being' had to the accompanying drawings, making a part of this specification, in which- Figure l is a View of a sash with a fastener attached andthe sash cut away so as to show the position of the ball and the form for an upper sash; Fig. 2, a view of a detached fastener, showing the position ofthe ball when it is attached to the window; Fig. 3, a similar view, showing spring and position of the ball when not attached to a window, with the planes upon which the ball works; and Fig. 4, a detached view of the ball, spring, and retracting-rod.

Like letters refer to similar parts in all of the gures.

The nature of my invention consists in constructing a sash fastener or stop which is provided with an elastic ball and incline plane or planes which will compress the ball between the window frame or sash, and thereby wedge the sash, so that it will remain in the position where it is placed, and will also form a lock or fastener which will secure the window against being raised from the outside; in providing the ball with a spring which will keep the ball against the sash or window-frame, according as it is placed on the frame or sash, and thereby secure its instant and constant operation; and in the several combinations hereinafter claimed.

To enable others skilled in the art to make and use my invention, I will proceed to describe itsconstrnction and operation.

I make my case or shell O substantially in the form shown at Fig. 2. Vhen it is to be placed on the outside of the sash or frame, and it is attached by inserting` screws in the holes g, it is made of brass, malleable iron, cast-iron, or other suitable material, and is made of a size suited to the weight of the window. Fig. 2 is drawn full size forordinary windows. When it is embedded in the sash the sides are made parallel and alike, and are attached by inserting screws, as indicated at f, Fig. 4.

The inside of the case C is provided with one or two inclined planes, e, of an angle of about forty ve degrees, which planes are grooved so as to iit the ball loosely and allow an easy retraction, and at the same time preserve the form oi'. the ball. I use only one incline, c, usually for the upper sash, as shown in Fig. l, where a portion of the sash is cut away to show the ball and incline, the ball resting in that form upon an horizontal plane in order to prevent the sash settling, as it would do a little if the ball, in shoving up the sash, rested upon a lower incline.

For the lower sash I usually use the double incline, as that will be found sufficient for a lock and stop both.

If a perfect lock is desired, I then use the fastener provided for the upper sash in an inverted position for the lower.

I make the ball a of solid india-rubber. It is not necessary to make the rubber spherical, and when not made spherical an elastic surface or coating will be sufficient; but I prefer that form, as it is more easily'withdrawn in use, and by making it of rubber or elastic I am enabled to use a ball which will operate to wedge the window in any position and always operate by reason of its easy friction without becoming smoothor wearing grooves in the frame or sash, so as in time to prevent its operation, as would be the case with a metallic ball.

In order to withdraw the ball so as to allow afree movement of the sash, it becomes necessary to make the cavity formed by the inclines deeper than the size of the ball. rIhis space in the apex or angle of the cavity I take up by a coiled or other spring, b, which keeps the ball a, against the frame or sash when not withdrawn by the retractingrod c, and thereby insures the instant and continued operation of the ball when released.

rIhe retracting-rod c is made in any desired form, and for the upper sash I attach a cord, d, to it, so as to bring it within reach. It passes through the shell U loosely, so as to permit free action to the ball, to which it is attached by a joint, as shown. In operation it holds the sash by its adhesive or friction qualities, and by operating as a wedge upon being drawn in between the incline of the fastener and the plane of the sash or frame, and the more weight there is in the window or the more power there is applied to move a sash without withdrawing .the ball the stronger it will hold, and no sash can fall where this fastener is applied, as its operation is instantaneous and works equally well at any and all points.

Having thus fully described my fastener, I will state thatI do not claim, broadly, the use or employment of the roller or ball as applied to a sash fastener or stop; but

S. D. BALDWIN.

Witnesses:

E. A. WEST, L. L. Bom). 

